TRC-207  (210-1645)            Specifications           FaxbaCK dOC. # 6974

General
Transmitter...........................Crystal Controlled PLL synthesizer,
                                                     amplitude modulation
Receiver............................Crystal controlled double conversion,
                                                   superheterodyne system
Communicating frequencies...........40 CB channels (26.965 to 27.405 MHz)
Voltage operation................................12V DC (negative ground)
Temperature and Humidity range...........-22ø F ~ + 140 øF(-30øC~ + 60øC)
Transmitter/Receiver switching.................................Electrical


Standard Test Conditions
Battery supply voltage...........................................13.8V DC
Modulation....................................................1000Hz, 30%
Receiver output power.................................50mW at internal SP
Receiver output impedance............................8 ohms non-inductive
Ant. load impedance of transmitter..................50 ohms non-inductive

Ambient conditions

Temperature..........................................63øF~73øF(17øC~23øC)
Humidity..........................................................40%~70%

Transmitter

Description.....................Nominal.............................Limit
Frequency Coverage...................................26.965 to 27.405 MHz
Power Input.................................5 W  (at HIGH) 2.5 W (at LOW)
Power Output....................................4W (at HIGH), 1W (at LOW)
RF power output.................at High~ 4.0 watts        3.6 ~ 4.4 watts
................................at Low  ~1 watts          0.7 ~ 1.3 watts
Antenna spurious emission.............................-70dB 0.3~ 1.3watts
Modulation capability...........+ 90%/-90%......................+80%/-80%
(positive/negative)
AMC Range at 1kHz...............40dB.................................30dB
Frequency accuracy..............0.002%.............................0.005%
Spurious radiation & Harmonic
   Signal radiation ratio.......-65dB...............................-60dB
   from fundmental
Current consumption
   at no modulation.............at High~1000mA.....................1200mA
                                at Low~600mA........................900mA
   at 80% modulation............at High~1600mA.....................1800mA
                                at Low~800mA.......................1200mA
Envelope distortion.............10% max.                 1000Hz, 50% mod.
Stability against variation.......................Satisfactory when dummy
of antenna impedance                                    antenna is varied
                                                from 40 ohms to 200 ohms.
Type of Modulation.....................................................A3
Antenna Impedance.................................................50 ohms
Current Drain............................................600mA to 1600 mA

Receiver

Description.....................Nominal.............................Limit
Frequency Coverage.......................................26.965 to 27.405
Intermediate frequency
  1st IF........................10.695MHz
  2nd IF........................455kHz
Sensitivity.......................................0.5uV for 10 dB (S+N)/N
Sensitivity for 50mW output     0.3uV...............................1.0uV
Sensitivity for 10dB (S + N)/N..0.7uV...............................1.0uV
Adjacent channel rejection......60dB.................................50dB
Image rejection (1st IF/2nd IF  70dB.................................50dB
If rejection ratio .............60dB................................45 dB
Signal-to-Noise ratio
(1st IF/2nD IF)
   at 1mV input.................40dB.................................35dB
Distortion at 1mV input
30% mod. (50 mW out)............3%..................................35 dB
AGC Figure of merit.............80dB.................................70dB
at 50 mV input
Power Output at 1mV input
   Undistored (10% THD).........350mW...............................250mW
   Maximum......................450mW...............................350mW
Electrical fidelity compared to 1000Hz
   450Hz........................-6dB..............................-6+/-dB
   2500 Hz......................-6dB...............................-6+/dB
Cross modulation................50 dB............................+/-40 dB
Squelch.........................60 dB............................60 +6 dB
.....................................................Adjustable from 1 uV
Current Consumption.............55 mA...............................100mA
(at squelch)
Battery low indicator...........9V................................8.1V~9V
(LED ON)
Audio Output............................................400 mW  (10% THD)
Current Drain.............................................55 mA to 550 mA


Dimensions...........................7 1/2" x 2 3/4" x 1 3/4" (W x H x D)
                                                    (184mm x 70mm x 44mm)
Weight....................................................14.1 ozs (400g)


Note:  Nominal specs represent the design specs;  all units should be
able to approximate these-some will exceed and some may drop slightly
below these specs.  Limit specs represent the absolute worst condition
which still might be considered acceptable; in no case should a unit fail
to meet limit specs.


(smm 03/04/94)